Sole-feeding device for shoe-nailing machines.



M. S. FINCH.

SOLE FEEDING DEVICE FOR SHOE NAILING MACHINES.

APPLICATION FILED APR. 5. 1915.

1,185,491. Patented May 30,1916.

2 SHEETS-SHEET lnnmllllllll If.

M. S. FINCH.

SOLE FEEDING DEVICE FOR SHOE NAILING MACHINES.

APPLICATION FILED APR. 5, I915.

1 ,1 85,49 1 Patented May 30, 1916.

2 SHEETS-SHEETZ- MAURICE S. FINCI-I, OF ST. JOSEPH, MISSOURI, ASSIGNORT0 SPECIALTY IVIACHIN- ERY COMPANY, or s'r. JOSEPH,

MISSOURI, A CORPORATION OF MISSOURI.

Specification of Letters Patent.

Patented May so, rare.

Application filed April 5, 1915. SerialNo. 19,194.

To all whom it may concern:

Be it known that I, MAURICE S. FINoH, a citizen of the United States,residing at St. Joseph, in the county of Buchanan and State of Missouri,have invented certain new and useful Improvements in Sole-FeedingDevices for Shoe-Nailing Machines, of which the following is aspecification.

My invention relates to shoe nailing maehinery and more particularly toa mechanism for feeding the soles under the nailing plunger.

The particular object of my invention is to provide a shoe nailingmachine with suitable mechanism that will feed the sole intermittentlyin uniform steps to the nailing plunger so that the nails may beinserted or driven into the sole equal distances apart.

Another object of my, invention is the provision of a sole feedingdevice that is accurate and eflicient in its operation, is somewhatflexible in its engagement with the edge of the sole, and which iscapable of various degrees of adjustment.

These objects I prefer to accomplish by the means and in the mannerhereinafter fully described and as more particularly pointed out in theclaims, reference being had to the accompanying drawings forming a parthereof wherein similar reference characters indicate the same parts inthe various figures.

In the drawings: Figure 1 is a vertical side elevation of a well-knowntype of shoe nailing machine showing my sole feeding device appliedthereto; Fig. 2 is a vertical side elevation of my sole feeding devicedetached from the nailing machine and drawn to an enlarged scale; Fig. 3is a transverse vertical section thereof taken on line 33 Fig. 2; Fig. 4is a fragmentary detail (drawn in top plan) of the feeding jaws andhaving the top friction'plate removed to better illustrate thearrangement of the elements; Fig. 5 is a transverse vertical section ofmy invention taken on line 5-5 Fig. 2.

Referring to the drawings, A represents a suitable standard, B an anvil,C a nail feed 7 and plunger, and D a supporting arm or frame in whichthe latter is mounted and which carries the usual nail hoppers E. Theseelements are of a well-known type of shoe nailing machinery and in sofar as my device is concerned maybe any of the combefore mentioned, and

mercial machines now on the market. For the purpose of convenience Ihave illustrated a Crowc automatic shoe nailing machine disclosed inPatents No. 74:2,396, dated October 27,1903, No. 994,408, dated June 6,1911, and No. 994,981, dated June 13, 1911. In this machine a suitablevertically disposed longitudinally reciprocable operating shaft F isjournaled in suitable bearings and is operable either by means of afoot'treadle G or by a motor mechanism II. The upper end operating shaftF extends through bearings in the overhanging member of the arm D andbetween said overhanging member and the base of said arm it has abracket I secured thereto which latter is adapted to actuate the nailfeed and driving plunger C adjacent its lower edge 1s provided with ananti-friction roller J (shown in Fig. 8) for operating the sole fedingmechanism now to be described.

Secured in any suitable manner to the upright of arm D, preferably by apivotal pin 6 passing through lateral-flanges is a swinging frame 7 theouter end of which is hori- Zontallv split or bifurcated as shown at 8.A clamping bolt 9 is tapped transversely through the bifurcations, andin order to lock the frame to arm D'the frame is provided with a camspindle 10 which when rotated by its handle 11 interlocks with both theframe and the adjacent portion of the arm D. The outer portion of theinner face of the swinging frame is provided with a longitudinallydisposed under-cut groove 12 that is of a width suflicient to extendupon both sides of the bifurcation and which affords a guideway for asubstantially L- shaped sliding carrier 13 in the shorter lateral memberof which the sole-feedin g members are mounted. Said carrier has oneside of its longer member provided with a dovetail tenon that cooperateswith and slides in said groove 12 andat its inner end is provided, witha lateral pin 14 that projects through a horizontally disposedlongitudinal slot 15 in the swinging frame. A suitable operating lever16 is pivoted adjacent its lower end upon the frame 7 and is providedmediate its ends with a vertically disposed longitudinal slot 17 that isengaged by said pin 14: so that the movement of sald lever in tion forthe purpose of regulating the marginal space between the edge of theshoesole and the row of nails.

Depending from the underside of the carrier adjacent its outer end aretwo lateral bearing bosses l8 and 19 that provide journals for a shorthorizontally disposed rockshaft 20 that extends beyond said bearings ateach end and between said bearings it has a collar 21 rigidly securedthereto. This collar is provided with a downwardly proje'cting lateralextension 22 to which one end of a coiled contraction spring 23 issecured, the opposite end of said spring being connected to a lug 2aupon the outer end of the shorter-arm of the carrier, thus keeping thelug and collar and its shaft normally at the limit of its movement inone direction. Mounted rigidly upon the inner extended end of rock-shaft20 is another collar 25 provided with a downwardly projecting L-shapedextension 26 that has its shorter lateral member bifurcated which latteris tapped transversely by a lock bolt 27. pawl member 28 is looselycarried by said rock-shaft 20 between bearing 19 and the collar 25 andis adjustably supported upon the upper end of a thumbscrew 29 extendingthrough the lateral member 26 of the adjacent collar. Pawl 28 is sopositioned that it lies in the path of roller J upon the bracket 1 abovedescribed so that when said bracket moves downwardly a suitable distancethe roller will engage the pawl depressing the latter and rocking shaft20. By adjusting the thumb screw 29 up or down the relative throw of thepawl and the consequent rocking of shaft 20 isregulated to a nicety.

The end of shaft 20 extended beyond bearing 18 is provided with asegmental or mutilated pinion 30 that is keyed thereto and limited inits rotation by means of a lateral pin 31 projecting outwardly from theadjacent portion of the carrier. An idle pinion 32 meshes with theaforesaid pinion and has its upper segment extended through an openingin a shelf 33 where it engages with a short rack-bar 34L slidablymounted on said shelf and adapted to be reciprocated by said pinion 32.Pivoted at one end to the adjacent end of rack bar 34 and carriedthereby is an irregular shaped link 35 a portion of the outer end ofwhich is provided with serrations or lateral teeth 36 and which aboutmidway its length has a semi-circular recess 37 cut therein, while arounded lateral stop lug 38 is formed integral therewith adjacent and atone side of said recess. A small bell-crank 39 is pivotally mounted on apin 39 on the rack bar 3% in such position that its'shorter roundedmember 40 fits into the recess 37 as shown in Fig. 4c of the drawings.The movement of the longer member of hell crank 39 will by theengagement of the shorter arm with link 35 causethe outer the spring 23and the rack toothed end of the latter to move outwardly or inwardly asthe case may be and this movement is so timed with relation to themovement of the rack bar that when said rack moves in the direction ofthe arrow the teeth will be inside the cover plate L1 as shown in fulllines in Fig. 4:, and when moved in an opposite direction said teethwill be outside said cover plate as shown in dotted lines in saidfigure. The upper surface of the larger arm of bell crank 39 ispreferably provided with a friction disk 42 of fiber or the like thatbears against the underside of plate 41 and when in operation saidbell-crank will be given a retarded sliding motion sufiicient to permitthe same to force the toothed end of link 35 out of or under the coverplate as will be understood. The cover plate is held in place bysuitable screws L3 that have springs 44 interposed between their headsand said plate and the tightening or loosening of which will increase orreduce the friction between said plate and friction disk.

In operation when the shoe has been properly placed upon the anvil andthe nailing margin determined by adjusting the lever 16, the foottreadle G is depressed (or the motor started, as the case may be) whichpulls down plunger F and bracket 1, causing roller J to engage pawl 28and rock the shaft 20 its full movement. The rocking of shaft 20operates segmental gear 30 which transmits its motion to rack at throughpinion 32 and saidrack will be moved in the direction indicated by thearrows in Figs. at and 5 of the drawings. This movement of the rack willcause a drag upon the friction disk a2 on the outer end of thebell-crank and a consequent movement of the link 35 to the positionshown in Fig. 4: in full lines. When pressure is relieved upon thefoottreadle and the plunger permitted to raise,

rock-shaft 20 will be rotated in an opposite to the exertion of will bemoved to its normal or restposition. During this latter movement thedragbeing again exerted upon the friction disk 42 in the opposite directionthe teeth on the end of link 35 will be moved out from under the coverplate 41 (as shown in dotted lines in Fig. 4:) thus causing said teethto engage the edge of the sole and move it alongone step so as toreceive the next succeeding nail. It will be observed that the movementof the sole does not take place until after the nail has been driveninto the same, said movement being purposely retarded in order to permitthe driving plunger to commence itswithdrawal or reverse direction owingbefore the teeth engage the edge of the sole.

From the above it will be obvious to others skilled in the art to whichmy invention pertains that numerous modifications and refinements of themechanism described are possible without materially altering the same,and I therefore desire it understood that all such changes andalterations are ineluded Within the scope of my invention as set forthin the appended claims.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent, is p 1. A sole feeding device for shoe nailingmachines comprising means for engaging and moving the sole, areciprocable device upon which said means is pivotally mounted, and adevice carried by said reciprocable device for moving said means intoand out of engagement with the sole.

2. A sole feeding device for shoe nailing machines comprising means forengaging and moving the sole, a reciprocable device upon which saidmeans is pivotally mounted, and a pivoted device carried by saidreciprocable device for moving said means into and out of engagementwith the sole.

3. A sole feeding device for shoe nailing machines comprising means forengaging and moving the sole, a reciprocable device upon which saidmeans is pivotally mounted, a bell crank pivoted on said reciprocabledevice one arm of which engages and operates said means, and means forrocking said bell-crank.

4.. A sole feeding device for shoe nailing machines comprising means forengaging and moving the sole, a reciprocable rack upon which saidmeansis carried, means for reciprocating said rack, abell-crank pivoted onsaid rack adjacent said first-mentioned means one arm of which engagesand operates the same, and means for rocking said bell-crank.

5. A sole feeding device for shoe nailing machines comprising means forengaging and moving the sole, a reciprocable rack upon which said meansis pivotally mounted, a bell-crank pivoted, on said rack one arm ofwhich engages and operates said means, a plate adjacent said bell-crank,and

Copies of this patent may be obtained for five cents each, by addressingthe a friction disk interposed between said bellcrank and said plate.

6. A sole feeding device for shoe nailing machines comprising a memberprovided with teeth on its outer end for engaging and moving the sole, areciprocable rack upon which said member is pivotally mounted, abell-crank pivoted on said rack one arm of which engages and operatessaid member, a plate adjacent said bell-crank, and a friction diskinterposed between said bell-crank and said plate.

7 A sole feeding device for shoe nailing machines comprising a frame, acarrier slidably mounted thereon, means for moving said carrier, areciprocable rack slidably mounted upon said carrier, a shoe engagingand moving member pivoted to said rack, and means for actuating saidmember.

8. A sole feeding device for shoe nailing machines comprising a frame, acarrier slidably mounted thereon, means for moving said carrier, areciprocable rack slidably mounted upon said carrier, a shoe engagingand moving member pivoted to said rack, and a device pivoted on saidrack for actuating said member.

9. A sole feeding device for shoe nailing machines comprising areciprocatory plate, an arm having a toothed edge pivoted to said plate,and means for extending and withdrawing said toothed edge respectivelybeyond and Within the edge of said plate comprising a member pivoted tosaid plate having an extension adapted to engage said arm and a secondextension carrying frictional engaging means whereby the movement ofsaid reciprocating plate causes the pivoting and sliding of said member.

In testimony whereof I aflix my signature in the presence of twowitnesses.

MAURICE S. FIN OH.

Washington, D. C.

Commissioner ofPatents.

